title: Gas in the epidural space after percutaneous vertebroplasty: where does the gas come from?
mesh_terms: D000368:Aged; D005119:Extravasation of Diagnostic and Therapeutic Materials; D005260:Female; D005592:Fracture Fixation / Q000379:methods*; D005740:Gases; D006801:Humans; D059408:Pain Management; D019904:Polymethyl Methacrylate / Q000008:administration & dosage; D011859:Radiography; D016103:Spinal Fractures / Q000000981:diagnostic imaging / Q000628:therapy*; D014618:Vacuum
chemical_list: D005740:Gases; D019904:Polymethyl Methacrylate